package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * @Author:ZouChou
 * @Description:
 * @Date:Created in 14:56 2024/4/24
 * @Modified By:
 */
@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * 新增菜品
     * @param dishDTO
     */
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {

        Dish dish = new Dish();

        //拷贝
        BeanUtils.copyProperties(dishDTO,dish);

        //插入一条菜品数据
        dishMapper.insert(dish);

        Long dishId =dish.getId();

        //多个菜品口味数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            //插入多个菜品口味数据
            dishFlavorMapper.insertFlavor(flavors);


        }

    }

    /**
     * 菜品分页查询
     * @param dishPageQueryDTO
     * @return
     */
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        //分页查询菜品数据
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());

    }

    /**
     * 根据id查询菜品
     *
     * @param id
     * @return
     */

    public DishDTO getById(Long id) {
        //查询菜品数据
        DishDTO dish = dishMapper.getById(id);

        //查询菜品口味数据
        List<DishFlavor> dishflavors = dishFlavorMapper.getByDishId(id);

        dish.setFlavors(dishflavors);
        return dish;

    }

    /**
     * 修改菜品
     * @param dishDTO
     */
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //更新菜品数据
        dishMapper.update(dish);
        //删除菜品口味数据
        dishFlavorMapper.deleteById(dishDTO.getId());
        //插入新的菜品口味数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            //插入多个菜品口味数据
            dishFlavorMapper.insertFlavor(flavors);


        }




    }

    /**
     * 批量删除菜品
     * @param ids
     */
    @Transactional
    public void delete(List<Long> ids) {
        //判断菜品能不能删除--是不是在售卖
        for(Long id : ids){
            DishDTO dish = dishMapper.getById(id);
            if (dish.getStatus() == 1){
                throw new RuntimeException("菜品正在售卖中，不能删除");
            }
        }
        //判断是不是被套餐包含
        for(Long id : ids){
            List<Long> count = setmealDishMapper.getSetmealIdsByDishIds(ids);
            if (count.size() > 0){
                throw new RuntimeException("菜品被套餐包含，不能删除");
            }
        }


        //删除菜品
        for (Long id : ids){
            dishMapper.deleteById(id);
            //删除口味
            dishFlavorMapper.deleteById(id);
        }


    }

    /**
     * 启售停售
     * @param status
     * @param id
     */
    @Transactional
    public void StartOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                .id(id)
                .status(status)
                .build();
        dishMapper.update(dish);


//        if (status == StatusConstant.DISABLE) {
//            // 如果是停售操作，还需要将包含当前菜品的套餐也停售
//            List<Long> dishIds = new ArrayList<>();
//            dishIds.add(id);
//            // select setmeal_id from setmeal_dish where dish_id in (?,?,?)
//
//            List<Long> setmealIds = stemealDishMapper.getSetmealIdsByDishIds(dishIds);
//            if (setmealIds != null && setmealIds.size() > 0) {
//                for (Long setmealId : setmealIds) {
//                    Setmeal setmeal = Setmeal.builder()
//                            .id(setmealId)
//                            .status(StatusConstant.DISABLE)
//                            .build();
//                    setmealMapper.update(setmeal);
//                }
//            }
//        }

        
    }

    /**
     * 根据分类id查询菜品
     * @param categoryId
     * @return
     */
    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish=Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }


}
